Distributing means for concrete pavers



A. E. LUNDBYE DISTRIBUTING MEANS FOR CONCRETE PAVERS Nov. 16, 1937.

Filed Sept. 11, 1935 4 Sheets-Sheet l Axel ,EZLundQye,

DISTRIBUTING MEANS FOR CONCRETE PAVERS Filed Sept. 11, 1935 4 Sheets-Sheet 2 AxelEiLundb ye,

1 1937- A. E. LUNDBYE 2,099,071

DISTRIBUTING MEANS FOR CONCRETE PAVERS Filed Sept. 11, 1935 v 4 Sheets-Sheet 3 Axelllll uiulye, I

Guam

Nov. 16, 1937. A, E, LUNDBYE 2,099,071

DISTRIBUTING MEANS FOR CONCRETE PAVERS Filed Sept. 11, 1935 4 Sheets-Sheet 4 A7: 91 Ell undye MQMQMM arm/H4 30 t'il Patented Nov. 16, 1937 PATENT ()FFHCE DISTRIBUTING MEANS FOR CONCRETE PAVER-S Axel E. Lundbye, Nunda, N. Y., assignor to The Focte Company, Inc.

ration of Delaware Application September 2 Claims.

My invention relates to new and useful improvements in distributing means for concrete pavers, and has for an object to provide a boom on which travels a carriage, through which car riage passes an endless conveyor belt. The carria'ge is provided with means for obstructing the aggregates in their forward movement on the conveyor belt and, in turn, deflecting them outwardly to either or both sides of the carriage where they will fall on the sub-grade. V

A further object of the invention is to provid a boom on which is a carriage, from both sides of which extend chutes, while extending across the carriage is mounted a bafile or abutment board having an enlarged central portion which .follows the surface contour of the conveyor belt, so that the aggregates in their travel, when striking the abutment board, will be forced transversely of the board and boom either into the chute to the right of the carriage or into the chute to the left of the carriage, depending upon the angle at which the abutment board is set. Still another object of the invention is to provide a boom with an endless conveyor together with a movable carriage on the boom, which latter may be set at any desired point along the length of the boom and wherein abutment boards Y may be set at an angle to the longitudinal axis "of the carriage, so that as the aggregates strike these they will be directed to the opposite sides of the boom and discharged to the sub-grade.

Still another object of the invention is to provide a concrete paver with an endless conveyor belt and angular positioning means for obstructing the outward movement of the aggregates on the belt to, in turn, discharge them to the sides of the boom at any desired point throughout the I length of the boom.

' 'Still another object of the invention is to pro- 7 vide an endless conveyor system for the discharge of the aggregates in a continuous manner to either or both sides of the boom and to do away i with the ordinary form of boom and bucket wherein the aggregates are first discharged into a bucket and then discharged to the sub-grade at'any point along the boom.

Still another object of the invention is to provide a boom and dispensing carriage construction for a concrete paver that is relatively simple in structure, inexpensive to manufacture, continuous in operation, and capable of distributing the Nunda, N. Y., a corpo- 11, 1935, Serial No. 40,179

vide a boom and dispensing construction for concrete pavers wherein the carriage normally remains stationary while the concrete is being distributed. However, the construction is such that the operator may move the carriage in or out slowly while the concrete is being distributed, so that the concrete might be flowed in a light layer rather than deposited in one heap which, of course, will be the case when the carriage remains stationary.

Still another'object of the invention is to provide a boom on which there is mounted a carriage, which carriage is arranged to be positioned at any point desired on the boom where it will remain during the distribution of the concrete until again re-positioned by the operator. The carriage is provided with two forwardly and transversely extending chutes with receptive means for a baflle or bafile boards, which boards are to be set at an angle to the central longitudinal axis of the carriage, so that the aggregates, when moving outwardly on a conveyor belt that passes beneath the carriage, will strike the board or boards, be deflected to the sides of the carriage, and fall from the chutes. In this way, the dispensing of the aggregates is continuous rather than in a bucket by bucket load, as is now the usual manner.

With these and other objects in view, the invention consists in certain new and novel arrangements and combination of parts, as will be hereinafter more fully described and pointed out in the claims.

Referring now to the drawings showing a preferred embodiment,

Fig. 1 is a fragmentary side elevation of the discharge end of a paver showing the boom with its endless conveyor and distributing carriage;

Fig. 2 is a top plan view of the same, showing the abutment or bafile board set to distribute the aggregates to the right side of the boom;

Fig. 3 is an enlarged fragmentary top plan view of the boom, conveyor belt, and carriage,

' the latter having in position the bafiie board for distributing the material to the right of the carriage, the baflle board also being seen in dotted lines showing how the same would be set to distribute the material to the left of the carriage;

Fig. 4 is a similar enlarged fragmentary side elevation of the carriage and the endless conveyor passing therethrough;

Fig. 5 is an enlarged transverse sectional view of the carriage, showing the manner in which the baflle board will cause the material to be distributed into and from the chute;

rangement of the mechanism for driving the carriage along the boom; forms the subjectr L It will be'undfilfstood thatth'e present applicaof the frame of the paver and also the mechanism for driving the conveyor belt and for selectively positioning the carriage outwardly or inwardly of the boom; further, the worm and gear for traversing the boom;

Fig. 9 is a fragmentary view of the outer end of the boom and conveyor belt and also showing means for scraping the belt to prevent the concrete from hardening thereon; and n I I Fig. 10 is a slightly modified fragmentary-top planview showing two abutting baffie boards for simultaneously deflecting the concrete to both sides. with? .09m.-

.Att utset i n e ilbe i m h the transmission perse, that is, the mechanism for driving the, endless conveyor beltan'd for permitting of the traversing of the boom and the armatter of a separate application about to be carriage also form the subject-matter of another application filed by me on May 25, 1935, bearing Serial Number 23,490, for Concrete payers.

vjtion relates more specifically to the movable carria'ge that may be set at any desired point along .the boom and its arrangement of chutes and .bafiie boards to cause the aggregates to be distributed to either orboth sides of the'boom as they travel outwardly on their endlessconveyor.

' Referring now more particularly to the several views, and for themomentto Figs. 1 and 2, there are shown thedischarge end of a frame I of a concrete paver, a fragmentary portion of the .mixing drum 2, the discharge chute 3, a hopper belt,alower boot'd, leading from the hopper 3,

and a gate 5 located within the hopper 3 for regulating the rate ofjedischarge from the mixing p 7 in any way interfere with the positioning of the carriage C at the desired point along theboom.

drum chute onto the endless conveyor belt 6 that travels along the boom '5. These several features arerall more specifically shown in the co-pending applicationiabove mentioned, to wit: Application filed by me on May 25, 1935, bearing Serial Num- "lowered; a'main power shaft 9 being shown in dotted lines for operating the transmission mechanism. 'Ihetran'smission per "se, as heretofore "mentioned, forms'the' subject-matter of an application about to be filed. The boom'? is also supported by the cables ill which may be seen on "the opposite sides of the boom' in Fig. 2, there ybeing mounted on the drum shaft 22.

l1, these latter link arms ll being secured on the cross rod I8. This construction is also shown in the beforementioned co-pending application, Serial Number 23,490.

The endless conveyor belt 6 may be of rubber or fabric composition and is driven from the drum i9, which drum, in turn, is driven by the chains on the sprockets 2i, the sprockets 2| The sprocket chains 2!! are driven by the sprockets 23 of the transmission 8.

"*The upper bight of the conveyor belt 6 is supported by the angularly positioned rollers 24, which may be seen in detail in Fig. 5, these rollers conforming to the'ordinary engineering practice. In Fig. 5 may also be seen the channels that make upthe boom 1, which will be cross-braced throughout its length, while the lower bight of the conveyor belt may be seen supported on the rollers'26 "that extend betw'een'the channels. The channels also form the tracks on which travel the' dispensing carriage C, about to be described.

belt.

Also in Fig. 9 there may be. seena small scraper :wheel' 3|, which is driven by the chain 32 from thesprocket 33 mounted on the drumlshaft 28, 7 this scraper wheel 3] 'co'ntactingfwith the belt as it moves on the under side ofthe idler drum, "so that the concrete will not hardenj o'n the belt either while the machine is in service or when the machine is shut down.

It 'might be mentioned that as far as the ispecification has proceeded, the subject-matter described is shown in my co-pending applications, and" these elements", taken incombination with the parts about to be described, form the .gist of the present invention.

Referring now more particularly to the gist of v the invention, and'to'Fi'gs; 3 and 4"for the moment; there is shown thamovable carriage C,

whichi's preferably rectangular in shape, having lithe forward cross frame andthe rear cross frame 35 and the two side frames 36' and 31.

There may also be noticed the wheels 38 which are mounted on their respective stub axles 39, so that the heretofore mentioned rollers 24 will not It will be noticed that the cross frames 34 and '35 do not extend down to a plane coincident with the axles of the wheels, as it will be remembered that the conveyor belt passes under these or through the carriage C and the baflie boards,

aggregates on the'conveyor .belt.

Ext-ending out beyond the wheels and attached to the side frames of the car are the four ears 40 and 40' to-the right in Fig-3 and and 4| to the left thereof, and it is to-these ears that the actuating cables arerespectively secured, as will shortly be described.

As may be noticed in all of the figures,.with

the exception of Figs. 7, 8, and 9, the carriage 'C" is provided with two outwardly extending chutes, 42 to the right in Fig. 10 and 43 to the leftthereof. 7 v

Describing just one of themf'as they are all alike, it will be noticed that the chute 42 consists aggregates (see Figs. 3, 5, and 8), as they build the chute to be deposited on the sub-grade.

heretofore mentioned, there are two of these up against the baflle board B (shown in detail in Fig. 7), will flow by gravity down the bottom of As chutes, so that the bafile board may deflect the aggregates to either chute, or two baflie boards may be used, as shown in the modified form in Fig. 10, to simultaneously distribute the aggregates to both sides of the conveyor boom.

It will also be noticed in Fig. 3 that these chutes extend inwardly of their carriage, their inner adjacent ends spaced from each other a distance just slightly greater than the surface ,width of the conveyor belt 6, so that as th e,ag-

gregates are swept from the conveyor belt by the abutment board they will flow by gravity down the chutes to the sub-grade.

It will further be noticed in the several views that the front Walls lil of the chutes extend, respectively, forwardly and outwardly from the sides of the carriage and at an angle greater than a right angle, so that the damming action of the bafile board will not be too abrupt but, on the other hand, will permit a deflecting action of the aggregates.

. Still referring for the moment to Fig. 3, it will be understood that in the side frames 36 and 37 of the carriage C there are cut slots, as at 36' and 31, so that the baffle board B may be inserted in the slot 31', extend transversely of the carriage and at an angle, and then pass within the slot 36' and be adjacent to and parallel with the front wall it of the chute 42.

This bafile or abutment board or scraper board B extends downwardly centrally of its length, as at 46, where there may be seen a rubber scraper 41, which is bolted thereto, as at 48, the outline of the rubber scraper following that of the loaded conveyor belt, which may be readily understood from Fig. 5. It will also be seen, as shown in Fig. 3, that when the baffle board is set in this position, as the advancing aggregates on the conveyor belt strike the board they will build. up and be deflected and flow by gravity into and out of the chute 42.

If it is desired to deflect the aggregates to the other side or, in other words, to the chute 43, the baffle board B will be placed at the angle shown in the dotted lines of the bafile board in Fig. 3. Likewise, there are two slots to receive the baffle board when in this position, one as at 43 and the other as at 43".

In Fig. 10 there is shown a slight modification, as far as the baffle board is concerned. In this instance, instead of having one baffle board B, there are two baille boards B and B" of just half the length of the one baffle board. The inner adjacent ends of the two boards will be mitred to provide a close fit at their apices, while the rear ends of the boards extend inwardly of the chutes far enough to be backed up by therespective front walls 44' of the chutes.

With this arrangement, the oncoming aggregates (not shown in Fig. 10) would, of course, be scraped from the conveyor belt and be defiected both to the right and left at the same time, rather than be directed just to one side of the boom.

It will be understood that it is but the matter of a moment to insert the bafiie board B in its carriage C and deflect the aggregates to the side desired, or likewise the matter of a moment to insert two baffie boards B and B to simultaneously discharge the aggregates to both sides of the boom.

Now the mechanism for advancing or retracting the carriage to the desired position is also shown in the co-pending application, Serial Number 23,490. In that instance, the carriage was of a different nature, but the mechanism shown for positioning it is the same as in the present application, so this mechanism will be described but briefly.

Referring to Figs. 3 and 8, it will be noticed that there is a cable A connected, as at A, to

the ear 49 on the carriage C and also woven about a small drum 55. This cable extends forwardly beneath the carriage C about the pulley 55 (Fig. 2) and then rearwardly and is connected to the ear Q6 of the carriage. In a like manner, there is a cable D connected, as at D, to the ear ii of the carriage, which extends rearwardly to the drum 52, where it is wrapped about the same, then extends forwardly again to the 53 opposite the pulley 5| at the forward end of the boom, and then again rearwardly, where it is connected by an eye bolt tothe ear 4! of the carriage.

In other words, there are two like endless cables connected to the carriage on its opposite sides, which cables are, in turn, operated by the drums 5-3 and 52 to either advance or retract the carriage along the boom.

The means of operating these drums 5D and 52 in either of the desired directions is as follows: (see Fig. 8)

The drum 52 is mounted on the shaft 54, on the opposite end of which is loosely mounted the mitre gear 55 which, in turn, meshes with the pinion 5G mounted on the shaft 51. Likewise, there is a loosely mounted mitre gear 53 meshing with the pinion 56, while centrally of the gears 55 and 58 is the slip-clutch collar 59, so that by a movement of the arm 68 through the rod 6! either one of these mitre gears may be locked with the drum shafts to thus rotate the drums in a forward or rearward direction. This is an ordinary form of selective clutch driving mechanism, and I have not shown the internal shaft connected with the slip collar or the details, as the same are well understood.

The shaft 57 has the pinion B2 thereon and is driven from the gear 63 on the shaft 64 which, in turn, is driven, as it will be remembered, by the sprocket 28 from the main transmission 8.

Therefore, a movement of the arm either to the right or left will cause the carriage to be moved forwardly or rearwardly by the like rotation of the drums. If, however, the clutch is in its neutral position, as shown in Fig. 8, the drums will remain idle.

As also shown in Fig. 8, there are a worm 65 and a gear 68 together with a clutch 61, so that the boom may be traversed as desired, and as this is not important in the instant case no further description is set out. It is further thought that from the description above given, the operation of the machine will be understood.

If it is desired to distribute concrete to the right, say at the forward end of the boom, the control rod 6| will be operated to cause the drums to, in turn, drive the carriage out to the desired point. The baffle board B will be placed, as shown in Figs. 2 and 3, while the conveyor belt is in operation or before it has been started, and the concrete poured on the conveyor belt, where it will be carried outwardly to be deflected when offthe carri"age, whichfmay'be done, as mentioned, byoperation, of the rod 6|.

"From the foregoing, it will be seen that I have provided a boom for concrete pavers "with an endless conveyor thereon and means for arresting and deflecting and distributing the concrete at any"poi'nt along the boom. Also, it, will be ,seen that the distribution is in a continuous manner, that is, as quickly as it can be emptied from the drum to the conveyor rather than utilizing the ordinary boom and bucket where the bucket has to be run inwardly and outwardly of the boom to the point desired.

It will also be understood that with this arrangement, the boom may be made longer than in ordinary practice. There is a great advantage in this, as where a large bucket is used the length of the boom is somewhat restricted, for the weight ofa fuli bucket on a long boom may tend to make the paver unstable. The only appreciable wear Will be on the baffle boards and rubber scrapers thereon, and these are relatively inexpensive to replace. I

The boom, of course, can be elevated to the desired angle by the usual hand-operated, drums and cable, heretofore mentioned, or by suitable power-operated mechanism.

Finally, it will be seen that the arrangement of the boom and its carriage and the manner of operation are very flexible and that the device "conveyor may pass therethrough, the side frames being providecry/1th oppositely extending chutes, said side frames provided Withslots, and a balile :board positionable in said respective slots atone "of two angles to divert the'contents of theendless conveyor-to the opposite chutes, depending 1 upon the selective angular position of saidbafile board. H

' 2. A' carriage positionable along a paver boom forarresting and deflecting material ca'rried'by an endlessc'onveyor, said carriage includingside frames and a front and a rear frame, the front and rear frames having a passageway therein so that the endless conveyor may pass therethrough, the side frames being provided with oppositely extending chutes, eachof said side frames provided with a plurality of slots, abalfle board positionable in said slots to divert the contents "of" the endless conveyor to the opposite chutes, depending upon the slots selected and the angular position of 'the'said baflie board insaid slots. 7

' AXEL E. LUNDBYE. 

